(I ain't gonna mention the dilution 'cause it was just too crazy weak and Lex is gonna yell at me.)

Nah, I'd never fuss at anyone for wanting to experiment. As long as it's with their own film and they don't blow up anything in the process. ~8o

BTW, I've tried stand processing with more dilute Rodinal (1:300 to 1:500) up to 24 hours but all I got was thick fog obscuring the developed image. Not usable.

I've also tried Ilfosol-S as a substitute for Xtol (both have an ascorbate component). No good - Ilfosol-S is prone to fog when used too dilute or for too long. A poor choice for push processing for that reason. Excellent for normal development with slow films, tho'.

I used semi-stand development (only about an hour) for developing my sheet film of the solar eclipse this spring. Mixed a dash of Maxim Muir's Compensating Pyrocatechin, agitated one minute, then the doorbell rang. and the door was unlocked...

So I simply put the lid from a pack of paper over the tray, and sneaked out the door trying to open it as little as possible.

As my unexpected guests were my parents, I could not really tell them to go away and come back later?

Eventually I got back to the darkroom and got a look at the negative: Perfect!

So that's what I'll do the next time I need to capture an SBR of >25 on film: Invite my parents over

Yup, that's the neighborhood of what I was fooling with. I was expecting fog and uneven development, particularly since I was dealing with a horizontal negative developed emulsion side up, but I just didn't get any of that. The negs were extraordinarily clean. I was using FP4, not tri-x, though. I've got some of the Efke and J&C films on order to experiment with.

For many years I have used a stand development technique I learned from an old press photographer. They called the method DD/FF (dilute developer/fast film)

They used TriX rated up to 3200 ASA and developed it in D76 diluted anywhere from 1 to 30 to 1 to 90 and upwards with a development time of 5 hours plus. I first tried it about 25 years ago and rated TriX at 20, 400, 800, 1600 and 3200 on the same roll and got good printable negatives from every film speed used. The grain was crisp and sharp as you would expect from TriX.